The Effect of Lumbar Lordosis on Screw Loosening in Dynesys Dynamic Stabilization: Four-Year Follow-Up with Computed Tomography

Table 1

Demographic and clinical characteristics.

Characteristic	Value
Number of patients	206
Sex
Male	115 (55.8%)
Female	91 (44.2%)
Age (year)	61.0 ± 12.9
Months of follow-up
Imaging	40.7 ± 19.7
Clinical	51.1 ± 20.8
Number of instrumented levels
1 level	86 (41.7%)
L2-3	2
L3-4	7
L4-5	61
L5-S1	16
2 levels	120 (58.3%)
L2-3-4	4
L3-4-5	86
L4-5-S1	30

Values are presented by mean ± SD.